Update rmsd to 1.5.1

[pyup-bot]

This PR updates rmsd from 1.2.7 to 1.5.1.

Changelog

1.5.1

Bug fix. 

- Remove typed_extension
- Dropped support for Python smaller than 3.8

1.5.0

Added static type, improved code quality and fixed bugs

* Switched to pre-commit for code-formatting
*  Updated github workflow
*  Added pytest for CLI args
*  Added HETATM keyword for PDB reader (https://github.com/charnley/rmsd/pull/89)
*  Adding static types and type test (https://github.com/charnley/rmsd/pull/81)
*  Fixed reorder inconsistency with print argument (https://github.com/charnley/rmsd/issues/93 https://github.com/charnley/rmsd/pull/94)

1.4

- refactor / formats
- better functions
- better tests
- added QML atom assignment

1.3.2

Bug fixes and reflections update

1.3.0

Added reordering functionality.
Restructure a bit, clearer structure
Added more tests

Links

• PyPI: https://pypi.org/project/rmsd
• Changelog: https://pyup.io/changelogs/rmsd/
• Repo: https://github.com/charnley/rmsd